Stove



G. J. KINGSBURY.

Magazine Stove.

Patented April 12, .859.

WIT/VESSA'S UNITED STATES PATENT OFFICE.

GILBERT J. KINGSBURY, OF ROCHESTER, NEW YORK.

STOVE.

Specification forming part of Letters Patent No. 23,587, dated April 12, 1859; Reissued February 17, 1863, No. 1,409.

To all whom it may concern:

Be it known that I, GILBERT J. KINGS- BURY, of Rochester, in the county of Monroe and State of New York, have invented a new and Improved Coal-Burning Stove; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon.

Figure 1 is a vertical section through the center. Fig. 2. is a horizontal section on the line a: of Fig. 1 showing a plan view of the fire pot and grate. Fig. 8. is a horizontal section at 1 y of Fig. 1, showing the top removed. Fig. 4. is a section of a portion of the fire pot detached.

Like letters refer to corresponding parts in all the figures.

To enable others to make and use my invention I will proceed to describe its construction and operation.

The outer cylinder A, incloses within it the radial-grated fire pot B, annular gratecap C, and interior feeding cylinder D, communicating with a door at the side of the outer cylinder at E. The fire pot is of peculiar construction its general form being that of an inverted hollow cone, truncated. The

lower portion, however, coming immediately above the grate F, is cylindrical, its interior diameter corresponding with that of the interior of C and D above it. The side grate bars a (a are arranged radially around the conical portion of the fire pot, their interior surfaces carrying up the interior diameter of the lower or cylindrical part of the fire pot to the opening of the cap C; while the space between that opening and the outer cylinder A, being the amount of obliquity of the flaring portion of the fire pet, from 0 to (Z, is divided by the grate bars into a number of openings 5 6 corresponding to the number of bars a in the side grate. It should be understood that these grate bars are solid, and form a part being cast with the fire pot, hence the spaces between them are passages through which the fire and products of combustion ascend into and escape through the outer cylinder A, and pipe or flue G.

The top surface of each of the grate bars a, has a groove or channel it, which communicates near the periphery with oblique holes 2' which penetrate through the side of B, into the chamber J, below. The grate cap has radial plates 9 projecting from its sldes in a position corresponding with the bars a which cover the grooves it- There are however small notches 0 on each side of the grooves which serve as minute openings through which the air, entering the apparatus i (as indicated by the red arrows) escapes in jets, which commingle with the products of combustion, as will hereafter be described. Air is supplied to the chamber J, through openings in the bottom 7c of the stove which do not communicate with the ash chamber H.

The operation is as follows: The coal is fed into the feeding cylinder D, through the side door E, where it descends the inclined plane m and falls on the bottom grate F, on which the fire is kindled. The door E being closed, air is supplied through the opening to the ash chamber, the draft ascending through the coal, and through the spaces 5 b of the side grate, and thence around cylinder D, to the top of the stove, where the products of combustion escape through the pipe G. The coal is consumed at the bottom first, the flame being carried thence up the spaces between the bars of side grate, the combustion being always chiefly at the periphery of the coal cylinder or fire pot. As it becomes consumed the weight of coal above it forces itself down keeping the fire replenished while the supply lasts. The heat is expended chiefly on the periphery of the furnace or cylinder, where it is directly radiated through the atmosphere of the room, no material loss occurring from internal radiation and absorption, as is the ease with stoves in which the combustion is most intense at the center. Air is rapidly drawn in through the orifices i z' and by means of the grooves h, and numerous outlets 0 0, is made to discharge directly into the gaseous products of the coal, and by freely mixing oxygen with them, insures their combustion at the outlet of the numerous passages 12 Z), where their heat will be most effectually radiated for warming purposes,namely, as the draft current is bent or deflected outward by the flaring course of 6, till it impinges directly on the exterior cylinder A. The depth of solid metal in the bars a receives and conducts the heat to the exterior; the draft conveys the flame in the same direction, and the passages, i h, are so arranged as to diffuse the air to every part, so that it is so intimately combined with the gases that their combustion must take place at the most efiectual point for heating, thus unitedly rendering it a most superior econoplate of the stove where a slide damper P,

opens or closes communication between it and the ash chamber H. This may be used as a useful regulator'of the draft which, should it prove too strong through the furnace, can be diminished and graduated by admitting cold air from the-chamber H.

I do not claim employing side grates merely, or admitting air to consume the gaseous products of combustion, when the devices and arrangements therefor differ substantially from my own; but

I claim- Constructing the fire pot or furnace B, so that a portion thereof is flaring or funnelshaped, yet having side grates or bars with perpendicular faces, a a, and flame passages, 12 b, with air tubes and jets, 2' 0, and grate cap C, when combined with the interior feeding cylinder, D, the whole arranged and operating substantially in the manner and for the purpose herein shown and described.

GILBERT J. KINGSBURY.

Witnesses:

S. J. ALLrs, WM. J. MOPI-IERSON. 

